SUARJANA, I Wayan; SURASMI, Ida Ayu. Forming an Optimal Portfolio with a Single Index Model: Empirical study on banking stocks in the LQ45 Index. Jurnal Ekonomi dan Bisnis Jagaditha, [S. l.], v. 11, n. 1, p. 88–95, 2024. DOI: 10.22225/jj.11.1.2024.88-95. Disponível em: https://www.ejournal.warmadewa.ac.id/index.php/jagaditha/article/view/9062. Acesso em: 16 jan. 2026.